| Mycobacterium parascrofulaceum |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium parascrofulaceum Turenne et al. 2004.
Member of the Mycobacterium simiae complex.
Mycobacterium, Mycobacterium parascrofulaceum Turenne et al. 2004.
Member of the Mycobacterium simiae complex.
Acid-fast pleomorphic bacilli; moderate beading.
Colonies on Lowenstein–Jensen and Middlebrook 7H10 agar grow within 2-4 weeks
and are scotochromogenic with yellow to orange pigmentation. Most strains form
smooth and domed colonies, but dry-wrinkled and mucoid forms can occur.
Temperature range for growth is 25-37 ºC; optimal growth is at 37 ºC; does not grow
at 42 ºC, on MacConkey agar or on media supplemented with 5% (w/v) NaCl.
and are scotochromogenic with yellow to orange pigmentation. Most strains form
smooth and domed colonies, but dry-wrinkled and mucoid forms can occur.
Temperature range for growth is 25-37 ºC; optimal growth is at 37 ºC; does not grow
at 42 ºC, on MacConkey agar or on media supplemented with 5% (w/v) NaCl.
Isolated from human respiratory samples. Susceptible to rifampin (32 µg/ml), clarithromycin, amikacin and sulfamethoxazole.
Resistant to isoniazid (1 µg/ml), ethambutol (2 µg/ml) (variable), streptomycin (8 µg/ml) (variabile).
Resistant to isoniazid (1 µg/ml), ethambutol (2 µg/ml) (variable), streptomycin (8 µg/ml) (variabile).
Potentially pathogenic.
- John G. Magee and Alan C. Ward 2012. Family III. Mycobacteriaceae Chester 1897, 63AL in Bergey’s Manual of Systematic
Bacteriology, Volume Five The Actinobacteria, Part A, Michael Goodfellow & al. (editors), 312-375. - Turenne CY, Cook VJ, Burdz TV, Pauls RJ, Thibert L, Wolfe JN, Kabani A. Mycobacterium parascrofulaceum sp. nov., novel slowly
growing, scotochromogenic clinical isolates related to Mycobacterium simiae. Int J Syst Evol Microbiol 2004; 54:1543-1551.
Positive results for thermotolerant catalase (68 ºC), pyrazinamidase, and urease.
Negative results for acid phosphatase, arylsulfatase (3 days), alpha- and beta-galactosidase, iron uptake, niacin accumulation,
nitrate reduction, Tween 80 hydrolysis, and tellurite reduction.
Variable results for arylsulfatase (14 days), and semi-quantitative catalase.
Negative results for acid phosphatase, arylsulfatase (3 days), alpha- and beta-galactosidase, iron uptake, niacin accumulation,
nitrate reduction, Tween 80 hydrolysis, and tellurite reduction.
Variable results for arylsulfatase (14 days), and semi-quantitative catalase.
(c) Costin Stoica
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